Fedora Core 1 could be seen as "Redhat Linux X (or 10)". RedHat discontinued normal RHL and is now focusing on Redhat Linux Enterprise (which costs $$). They help support the Fedora project though, which has taken over the normal Redhat Linux code and is supported by Redhat and the open source community (according to them).
See more at
http://fedora.redhat.com.
That said, I'm waiting till my university has got it on there FTP site, then I'll grab it off there (it's free for me!). Will probably take a couple days.. which is good since I'm in the middle of exams anyways.